7Artisans 4mm f/2.8 Circular Fisheye 4mm
Delivering a 225° circular-fisheye view on APS-C (6mm equivalent) with an f/2.8 aperture, it captures low-light scenes with pronounced distortion. Weighing just 201g and featuring a de-clicked aperture ring, the lens pairs naturally with gimbals and drones for smooth video iris changes. It’s best for macro shooters working at its 3.3-inch minimum focus distance and panorama creators stitching 360° spheres from two shots.
Snapshot
Pros & Cons
Pros
- Strong macro (95th percentile) 95th
- Strong aperture (86th percentile) 86th
- Strong bokeh (84th percentile) 84th
- Strong build (81st percentile) 81st
Cons
- Below average af (14th percentile)
- Below average social proof (29th percentile)
- Below average user sentiment (30th percentile)
- Below average versatility (34th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 8 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Fisheye |
| Focal Length Min | 4 |
| Focal Length Max | 4 |
| Elements | 10 |
| Groups | 8 |
Aperture
| Max Aperture | f/2.8 |
| Min Aperture | f/16 |
| Constant | No |
| Diaphragm Blades | 7 |
Build
| Mount | Micro Four Thirds |
| Format | micro-four-thirds |
| Weight | 0.2 kg / 0.4 lbs |
AF & Stabilization
| AF Type | Manual Focus |
| Stabilization | No |
Focus
| Min Focus Distance | 85 |
vs Competition
| Spec | 7Artisans 4mm f/2.8 Circular Fisheye 4mm | Tamron Di III 28-75mm f/2.8 VXD G2 | Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR | Panasonic LUMIX S S-R2060 | Sigma Art 28mm f/1.4 DG HSM Art | Fujifilm XF 18mm f/1.4 R LM WR |
|---|---|---|---|---|---|---|
| Focal Length | 4mm | 28-75mm | 16-50mm | 20-60mm | 28mm | 18mm |
| Max Aperture | f/2.8 | f/2.8 | f/3.5 | f/3.5 | f/1.4 | f/16 |
| Mount | Micro Four Thirds | Sony E | Nikon Z | L-Mount | Nikon F | Fujifilm X |
| Stabilization | false | false | true | false | false | false |
| Weather Sealed | false | true | false | true | true | true |
| Weight (g) | 201 | 540 | 135 | 350 | 865 | 370 |
| AF Type | Manual Focus | VXD | Stepping Motor | stepping motor | HSM | Linear motor |
| Lens Type | fisheye | zoom | zoom | zoom | prime | prime |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| 7Artisans 4mm f/2.8 Circular Fisheye 4mm | 13.9 | 83.5 | 80.7 | 95.2 | 40.4 | 85.8 | 29.8 | 33.6 | 29.4 | 38 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88.1 | 67.2 | 87.3 | 87.8 | 85.8 | 80.4 | 78.2 | 83.1 | 38 |
| Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR Compare | 87 | 77.8 | 91.8 | 42.4 | 71.5 | 79.8 | 0 | 82.9 | 73.7 | 94.9 |
| Panasonic LUMIX S S-R2060 Compare | 87 | 86.1 | 80.6 | 66.2 | 76.4 | 79.8 | 0 | 81.5 | 64.9 | 38 |
| Sigma Art 28mm f/1.4 DG HSM Art Compare | 54.6 | 96.8 | 45.8 | 74.5 | 96.6 | 96.9 | 80.4 | 33.6 | 59.2 | 38 |
| Fujifilm XF 18mm f/1.4 R LM WR Compare | 98 | 41.2 | 79.4 | 84.1 | 83.4 | 45.8 | 90.8 | 33.6 | 87.9 | 38 |
Price
Value & Pricing
B&H Photo 2 offers From CA$205
We started tracking prices for this product on May 29, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
